Home / 2,185-3,289.84-1,926.66

Finding the Fourth Proportional to 2,185, 3,289.84 and 1,926.66

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Solution

The fourth proportional to 2,185, 3,289.84 and 1,926.66 is: 2,900.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,185 : 3,289.84 = 1,926.66 : x
  2. Step 2: Convert to fraction form
    2,185/3,289.84 = 1,926.66/x
  3. Step 3: Cross multiply
    2,185x = 3,289.84 × 1,926.66
  4. Step 4: Simplify right side
    2,185x = 6,338,403.13
  5. Step 5: Solve for x
    x = 6,338,403.13/2,185
  6. Step 6: Final answer
    x = 2,900.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.